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<h2><span class="refentrytitle"><a name="glib-File-Utilities.top_of_page"></a>File Utilities</span></h2>
<p>File Utilities — various file-related functions</p>
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<a name="glib-File-Utilities.synopsis"></a><h2>Synopsis</h2>
<pre class="synopsis">
#include &lt;glib.h&gt;
#include &lt;glib/gstdio.h&gt;

enum                <a class="link" href="glib-File-Utilities.html#GFileError" title="enum GFileError">GFileError</a>;
#define             <a class="link" href="glib-File-Utilities.html#G-FILE-ERROR:CAPS" title="G_FILE_ERROR">G_FILE_ERROR</a>
enum                <a class="link" href="glib-File-Utilities.html#GFileTest" title="enum GFileTest">GFileTest</a>;
<a class="link" href="glib-File-Utilities.html#GFileError" title="enum GFileError"><span class="returnvalue">GFileError</span></a>          <a class="link" href="glib-File-Utilities.html#g-file-error-from-errno" title="g_file_error_from_errno ()">g_file_error_from_errno</a>             (<em class="parameter"><code><a class="link" href="glib-Basic-Types.html#gint" title="gint"><span class="type">gint</span></a> err_no</code></em>);
<a class="link" href="glib-Basic-Types.html#gboolean" title="gboolean"><span class="returnvalue">gboolean</span></a>            <a class="link" href="glib-File-Utilities.html#g-file-get-contents" title="g_file_get_contents ()">g_file_get_contents</a>                 (<em class="parameter"><code>const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *filename</code></em>,
                                                         <em class="parameter"><code><a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> **contents</code></em>,
                                                         <em class="parameter"><code><a class="link" href="glib-Basic-Types.html#gsize" title="gsize"><span class="type">gsize</span></a> *length</code></em>,
                                                         <em class="parameter"><code><a class="link" href="glib-Error-Reporting.html#GError" title="struct GError"><span class="type">GError</span></a> **error</code></em>);
<a class="link" href="glib-Basic-Types.html#gboolean" title="gboolean"><span class="returnvalue">gboolean</span></a>            <a class="link" href="glib-File-Utilities.html#g-file-set-contents" title="g_file_set_contents ()">g_file_set_contents</a>                 (<em class="parameter"><code>const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *filename</code></em>,
                                                         <em class="parameter"><code>const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *contents</code></em>,
                                                         <em class="parameter"><code><a class="link" href="glib-Basic-Types.html#gssize" title="gssize"><span class="type">gssize</span></a> length</code></em>,
                                                         <em class="parameter"><code><a class="link" href="glib-Error-Reporting.html#GError" title="struct GError"><span class="type">GError</span></a> **error</code></em>);
<a class="link" href="glib-Basic-Types.html#gboolean" title="gboolean"><span class="returnvalue">gboolean</span></a>            <a class="link" href="glib-File-Utilities.html#g-file-test" title="g_file_test ()">g_file_test</a>                         (<em class="parameter"><code>const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *filename</code></em>,
                                                         <em class="parameter"><code><a class="link" href="glib-File-Utilities.html#GFileTest" title="enum GFileTest"><span class="type">GFileTest</span></a> test</code></em>);
<a class="link" href="glib-Basic-Types.html#gint" title="gint"><span class="returnvalue">gint</span></a>                <a class="link" href="glib-File-Utilities.html#g-mkstemp" title="g_mkstemp ()">g_mkstemp</a>                           (<em class="parameter"><code><a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *tmpl</code></em>);
<a class="link" href="glib-Basic-Types.html#gint" title="gint"><span class="returnvalue">gint</span></a>                <a class="link" href="glib-File-Utilities.html#g-mkstemp-full" title="g_mkstemp_full ()">g_mkstemp_full</a>                      (<em class="parameter"><code><a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *tmpl</code></em>,
                                                         <em class="parameter"><code><a class="link" href="glib-Basic-Types.html#gint" title="gint"><span class="type">gint</span></a> flags</code></em>,
                                                         <em class="parameter"><code><a class="link" href="glib-Basic-Types.html#gint" title="gint"><span class="type">gint</span></a> mode</code></em>);
<a class="link" href="glib-Basic-Types.html#gint" title="gint"><span class="returnvalue">gint</span></a>                <a class="link" href="glib-File-Utilities.html#g-file-open-tmp" title="g_file_open_tmp ()">g_file_open_tmp</a>                     (<em class="parameter"><code>const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *tmpl</code></em>,
                                                         <em class="parameter"><code><a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> **name_used</code></em>,
                                                         <em class="parameter"><code><a class="link" href="glib-Error-Reporting.html#GError" title="struct GError"><span class="type">GError</span></a> **error</code></em>);
<a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="returnvalue">gchar</span></a> *             <a class="link" href="glib-File-Utilities.html#g-file-read-link" title="g_file_read_link ()">g_file_read_link</a>                    (<em class="parameter"><code>const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *filename</code></em>,
                                                         <em class="parameter"><code><a class="link" href="glib-Error-Reporting.html#GError" title="struct GError"><span class="type">GError</span></a> **error</code></em>);
<a class="link" href="glib-Basic-Types.html#gint" title="gint"><span class="returnvalue">gint</span></a>                <a class="link" href="glib-File-Utilities.html#g-mkdir-with-parents" title="g_mkdir_with_parents ()">g_mkdir_with_parents</a>                (<em class="parameter"><code>const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *pathname</code></em>,
                                                         <em class="parameter"><code><a class="link" href="glib-Basic-Types.html#gint" title="gint"><span class="type">gint</span></a> mode</code></em>);
<a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="returnvalue">gchar</span></a> *             <a class="link" href="glib-File-Utilities.html#g-mkdtemp" title="g_mkdtemp ()">g_mkdtemp</a>                           (<em class="parameter"><code><a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *tmpl</code></em>);
<a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="returnvalue">gchar</span></a> *             <a class="link" href="glib-File-Utilities.html#g-mkdtemp-full" title="g_mkdtemp_full ()">g_mkdtemp_full</a>                      (<em class="parameter"><code><a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *tmpl</code></em>,
                                                         <em class="parameter"><code><a class="link" href="glib-Basic-Types.html#gint" title="gint"><span class="type">gint</span></a> mode</code></em>);
<a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="returnvalue">gchar</span></a> *             <a class="link" href="glib-File-Utilities.html#g-dir-make-tmp" title="g_dir_make_tmp ()">g_dir_make_tmp</a>                      (<em class="parameter"><code>const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *tmpl</code></em>,
                                                         <em class="parameter"><code><a class="link" href="glib-Error-Reporting.html#GError" title="struct GError"><span class="type">GError</span></a> **error</code></em>);

                    <a class="link" href="glib-File-Utilities.html#GDir" title="GDir">GDir</a>;
<a class="link" href="glib-File-Utilities.html#GDir" title="GDir"><span class="returnvalue">GDir</span></a> *              <a class="link" href="glib-File-Utilities.html#g-dir-open" title="g_dir_open ()">g_dir_open</a>                          (<em class="parameter"><code>const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *path</code></em>,
                                                         <em class="parameter"><code><a class="link" href="glib-Basic-Types.html#guint" title="guint"><span class="type">guint</span></a> flags</code></em>,
                                                         <em class="parameter"><code><a class="link" href="glib-Error-Reporting.html#GError" title="struct GError"><span class="type">GError</span></a> **error</code></em>);
const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="returnvalue">gchar</span></a> *       <a class="link" href="glib-File-Utilities.html#g-dir-read-name" title="g_dir_read_name ()">g_dir_read_name</a>                     (<em class="parameter"><code><a class="link" href="glib-File-Utilities.html#GDir" title="GDir"><span class="type">GDir</span></a> *dir</code></em>);
<span class="returnvalue">void</span>                <a class="link" href="glib-File-Utilities.html#g-dir-rewind" title="g_dir_rewind ()">g_dir_rewind</a>                        (<em class="parameter"><code><a class="link" href="glib-File-Utilities.html#GDir" title="GDir"><span class="type">GDir</span></a> *dir</code></em>);
<span class="returnvalue">void</span>                <a class="link" href="glib-File-Utilities.html#g-dir-close" title="g_dir_close ()">g_dir_close</a>                         (<em class="parameter"><code><a class="link" href="glib-File-Utilities.html#GDir" title="GDir"><span class="type">GDir</span></a> *dir</code></em>);

                    <a class="link" href="glib-File-Utilities.html#GMappedFile" title="GMappedFile">GMappedFile</a>;
<a class="link" href="glib-File-Utilities.html#GMappedFile" title="GMappedFile"><span class="returnvalue">GMappedFile</span></a> *       <a class="link" href="glib-File-Utilities.html#g-mapped-file-new" title="g_mapped_file_new ()">g_mapped_file_new</a>                   (<em class="parameter"><code>const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *filename</code></em>,
                                                         <em class="parameter"><code><a class="link" href="glib-Basic-Types.html#gboolean" title="gboolean"><span class="type">gboolean</span></a> writable</code></em>,
                                                         <em class="parameter"><code><a class="link" href="glib-Error-Reporting.html#GError" title="struct GError"><span class="type">GError</span></a> **error</code></em>);
<a class="link" href="glib-File-Utilities.html#GMappedFile" title="GMappedFile"><span class="returnvalue">GMappedFile</span></a> *       <a class="link" href="glib-File-Utilities.html#g-mapped-file-new-from-fd" title="g_mapped_file_new_from_fd ()">g_mapped_file_new_from_fd</a>           (<em class="parameter"><code><a class="link" href="glib-Basic-Types.html#gint" title="gint"><span class="type">gint</span></a> fd</code></em>,
                                                         <em class="parameter"><code><a class="link" href="glib-Basic-Types.html#gboolean" title="gboolean"><span class="type">gboolean</span></a> writable</code></em>,
                                                         <em class="parameter"><code><a class="link" href="glib-Error-Reporting.html#GError" title="struct GError"><span class="type">GError</span></a> **error</code></em>);
<a class="link" href="glib-File-Utilities.html#GMappedFile" title="GMappedFile"><span class="returnvalue">GMappedFile</span></a> *       <a class="link" href="glib-File-Utilities.html#g-mapped-file-ref" title="g_mapped_file_ref ()">g_mapped_file_ref</a>                   (<em class="parameter"><code><a class="link" href="glib-File-Utilities.html#GMappedFile" title="GMappedFile"><span class="type">GMappedFile</span></a> *file</code></em>);
<span class="returnvalue">void</span>                <a class="link" href="glib-File-Utilities.html#g-mapped-file-unref" title="g_mapped_file_unref ()">g_mapped_file_unref</a>                 (<em class="parameter"><code><a class="link" href="glib-File-Utilities.html#GMappedFile" title="GMappedFile"><span class="type">GMappedFile</span></a> *file</code></em>);
<span class="returnvalue">void</span>                <a class="link" href="glib-File-Utilities.html#g-mapped-file-free" title="g_mapped_file_free ()">g_mapped_file_free</a>                  (<em class="parameter"><code><a class="link" href="glib-File-Utilities.html#GMappedFile" title="GMappedFile"><span class="type">GMappedFile</span></a> *file</code></em>);
<a class="link" href="glib-Basic-Types.html#gsize" title="gsize"><span class="returnvalue">gsize</span></a>               <a class="link" href="glib-File-Utilities.html#g-mapped-file-get-length" title="g_mapped_file_get_length ()">g_mapped_file_get_length</a>            (<em class="parameter"><code><a class="link" href="glib-File-Utilities.html#GMappedFile" title="GMappedFile"><span class="type">GMappedFile</span></a> *file</code></em>);
<a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="returnvalue">gchar</span></a> *             <a class="link" href="glib-File-Utilities.html#g-mapped-file-get-contents" title="g_mapped_file_get_contents ()">g_mapped_file_get_contents</a>          (<em class="parameter"><code><a class="link" href="glib-File-Utilities.html#GMappedFile" title="GMappedFile"><span class="type">GMappedFile</span></a> *file</code></em>);

<span class="returnvalue">int</span>                 <a class="link" href="glib-File-Utilities.html#g-open" title="g_open ()">g_open</a>                              (<em class="parameter"><code>const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *filename</code></em>,
                                                         <em class="parameter"><code><span class="type">int</span> flags</code></em>,
                                                         <em class="parameter"><code><span class="type">int</span> mode</code></em>);
<span class="returnvalue">int</span>                 <a class="link" href="glib-File-Utilities.html#g-rename" title="g_rename ()">g_rename</a>                            (<em class="parameter"><code>const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *oldfilename</code></em>,
                                                         <em class="parameter"><code>const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *newfilename</code></em>);
<span class="returnvalue">int</span>                 <a class="link" href="glib-File-Utilities.html#g-mkdir" title="g_mkdir ()">g_mkdir</a>                             (<em class="parameter"><code>const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *filename</code></em>,
                                                         <em class="parameter"><code><span class="type">int</span> mode</code></em>);
typedef             <a class="link" href="glib-File-Utilities.html#GStatBuf" title="GStatBuf">GStatBuf</a>;
<span class="returnvalue">int</span>                 <a class="link" href="glib-File-Utilities.html#g-stat" title="g_stat ()">g_stat</a>                              (<em class="parameter"><code>const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *filename</code></em>,
                                                         <em class="parameter"><code><a class="link" href="glib-File-Utilities.html#GStatBuf" title="GStatBuf"><span class="type">GStatBuf</span></a> *buf</code></em>);
<span class="returnvalue">int</span>                 <a class="link" href="glib-File-Utilities.html#g-lstat" title="g_lstat ()">g_lstat</a>                             (<em class="parameter"><code>const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *filename</code></em>,
                                                         <em class="parameter"><code><a class="link" href="glib-File-Utilities.html#GStatBuf" title="GStatBuf"><span class="type">GStatBuf</span></a> *buf</code></em>);
<span class="returnvalue">int</span>                 <a class="link" href="glib-File-Utilities.html#g-unlink" title="g_unlink ()">g_unlink</a>                            (<em class="parameter"><code>const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *filename</code></em>);
<span class="returnvalue">int</span>                 <a class="link" href="glib-File-Utilities.html#g-remove" title="g_remove ()">g_remove</a>                            (<em class="parameter"><code>const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *filename</code></em>);
<span class="returnvalue">int</span>                 <a class="link" href="glib-File-Utilities.html#g-rmdir" title="g_rmdir ()">g_rmdir</a>                             (<em class="parameter"><code>const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *filename</code></em>);
<span class="returnvalue">FILE</span> *              <a class="link" href="glib-File-Utilities.html#g-fopen" title="g_fopen ()">g_fopen</a>                             (<em class="parameter"><code>const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *filename</code></em>,
                                                         <em class="parameter"><code>const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *mode</code></em>);
<span class="returnvalue">FILE</span> *              <a class="link" href="glib-File-Utilities.html#g-freopen" title="g_freopen ()">g_freopen</a>                           (<em class="parameter"><code>const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *filename</code></em>,
                                                         <em class="parameter"><code>const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *mode</code></em>,
                                                         <em class="parameter"><code><span class="type">FILE</span> *stream</code></em>);
<span class="returnvalue">int</span>                 <a class="link" href="glib-File-Utilities.html#g-chmod" title="g_chmod ()">g_chmod</a>                             (<em class="parameter"><code>const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *filename</code></em>,
                                                         <em class="parameter"><code><span class="type">int</span> mode</code></em>);
<span class="returnvalue">int</span>                 <a class="link" href="glib-File-Utilities.html#g-access" title="g_access ()">g_access</a>                            (<em class="parameter"><code>const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *filename</code></em>,
                                                         <em class="parameter"><code><span class="type">int</span> mode</code></em>);
<span class="returnvalue">int</span>                 <a class="link" href="glib-File-Utilities.html#g-creat" title="g_creat ()">g_creat</a>                             (<em class="parameter"><code>const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *filename</code></em>,
                                                         <em class="parameter"><code><span class="type">int</span> mode</code></em>);
<span class="returnvalue">int</span>                 <a class="link" href="glib-File-Utilities.html#g-chdir" title="g_chdir ()">g_chdir</a>                             (<em class="parameter"><code>const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *path</code></em>);
<span class="returnvalue">int</span>                 <a class="link" href="glib-File-Utilities.html#g-utime" title="g_utime ()">g_utime</a>                             (<em class="parameter"><code>const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *filename</code></em>,
                                                         <em class="parameter"><code><span class="type">struct utimbuf</span> *utb</code></em>);
</pre>
</div>
<div class="refsect1">
<a name="glib-File-Utilities.description"></a><h2>Description</h2>
<p>
There is a group of functions which wrap the common POSIX functions
dealing with filenames (<a class="link" href="glib-File-Utilities.html#g-open" title="g_open ()"><code class="function">g_open()</code></a>, <a class="link" href="glib-File-Utilities.html#g-rename" title="g_rename ()"><code class="function">g_rename()</code></a>, <a class="link" href="glib-File-Utilities.html#g-mkdir" title="g_mkdir ()"><code class="function">g_mkdir()</code></a>, <a class="link" href="glib-File-Utilities.html#g-stat" title="g_stat ()"><code class="function">g_stat()</code></a>,
<a class="link" href="glib-File-Utilities.html#g-unlink" title="g_unlink ()"><code class="function">g_unlink()</code></a>, <a class="link" href="glib-File-Utilities.html#g-remove" title="g_remove ()"><code class="function">g_remove()</code></a>, <a class="link" href="glib-File-Utilities.html#g-fopen" title="g_fopen ()"><code class="function">g_fopen()</code></a>, <a class="link" href="glib-File-Utilities.html#g-freopen" title="g_freopen ()"><code class="function">g_freopen()</code></a>). The point of these
wrappers is to make it possible to handle file names with any Unicode
characters in them on Windows without having to use ifdefs and the
wide character API in the application code.
</p>
<p>
The pathname argument should be in the GLib file name encoding.
On POSIX this is the actual on-disk encoding which might correspond
to the locale settings of the process (or the
<code class="envar">G_FILENAME_ENCODING</code> environment variable), or not.
</p>
<p>
On Windows the GLib file name encoding is UTF-8. Note that the
Microsoft C library does not use UTF-8, but has separate APIs for
current system code page and wide characters (UTF-16). The GLib
wrappers call the wide character API if present (on modern Windows
systems), otherwise convert to/from the system code page.
</p>
<p>
Another group of functions allows to open and read directories
in the GLib file name encoding. These are <a class="link" href="glib-File-Utilities.html#g-dir-open" title="g_dir_open ()"><code class="function">g_dir_open()</code></a>,
<a class="link" href="glib-File-Utilities.html#g-dir-read-name" title="g_dir_read_name ()"><code class="function">g_dir_read_name()</code></a>, <a class="link" href="glib-File-Utilities.html#g-dir-rewind" title="g_dir_rewind ()"><code class="function">g_dir_rewind()</code></a>, <a class="link" href="glib-File-Utilities.html#g-dir-close" title="g_dir_close ()"><code class="function">g_dir_close()</code></a>.
</p>
</div>
<div class="refsect1">
<a name="glib-File-Utilities.details"></a><h2>Details</h2>
<div class="refsect2">
<a name="GFileError"></a><h3>enum GFileError</h3>
<pre class="programlisting">typedef enum {
  G_FILE_ERROR_EXIST,
  G_FILE_ERROR_ISDIR,
  G_FILE_ERROR_ACCES,
  G_FILE_ERROR_NAMETOOLONG,
  G_FILE_ERROR_NOENT,
  G_FILE_ERROR_NOTDIR,
  G_FILE_ERROR_NXIO,
  G_FILE_ERROR_NODEV,
  G_FILE_ERROR_ROFS,
  G_FILE_ERROR_TXTBSY,
  G_FILE_ERROR_FAULT,
  G_FILE_ERROR_LOOP,
  G_FILE_ERROR_NOSPC,
  G_FILE_ERROR_NOMEM,
  G_FILE_ERROR_MFILE,
  G_FILE_ERROR_NFILE,
  G_FILE_ERROR_BADF,
  G_FILE_ERROR_INVAL,
  G_FILE_ERROR_PIPE,
  G_FILE_ERROR_AGAIN,
  G_FILE_ERROR_INTR,
  G_FILE_ERROR_IO,
  G_FILE_ERROR_PERM,
  G_FILE_ERROR_NOSYS,
  G_FILE_ERROR_FAILED
} GFileError;
</pre>
<p>
Values corresponding to <em class="parameter"><code>errno</code></em> codes returned from file operations
on UNIX. Unlike <em class="parameter"><code>errno</code></em> codes, GFileError values are available on
all systems, even Windows. The exact meaning of each code depends
on what sort of file operation you were performing; the UNIX
documentation gives more details. The following error code descriptions
come from the GNU C Library manual, and are under the copyright
of that manual.
</p>
<p>
It's not very portable to make detailed assumptions about exactly
which errors will be returned from a given operation. Some errors
don't occur on some systems, etc., sometimes there are subtle
differences in when a system will report a given error, etc.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><a name="G-FILE-ERROR-EXIST:CAPS"></a><span class="term"><code class="literal">G_FILE_ERROR_EXIST</code></span></p></td>
<td>Operation not permitted; only the owner of
    the file (or other resource) or processes with special privileges
    can perform the operation.
</td>
</tr>
<tr>
<td><p><a name="G-FILE-ERROR-ISDIR:CAPS"></a><span class="term"><code class="literal">G_FILE_ERROR_ISDIR</code></span></p></td>
<td>File is a directory; you cannot open a directory
    for writing, or create or remove hard links to it.
</td>
</tr>
<tr>
<td><p><a name="G-FILE-ERROR-ACCES:CAPS"></a><span class="term"><code class="literal">G_FILE_ERROR_ACCES</code></span></p></td>
<td>Permission denied; the file permissions do not
    allow the attempted operation.
</td>
</tr>
<tr>
<td><p><a name="G-FILE-ERROR-NAMETOOLONG:CAPS"></a><span class="term"><code class="literal">G_FILE_ERROR_NAMETOOLONG</code></span></p></td>
<td>Filename too long.
</td>
</tr>
<tr>
<td><p><a name="G-FILE-ERROR-NOENT:CAPS"></a><span class="term"><code class="literal">G_FILE_ERROR_NOENT</code></span></p></td>
<td>No such file or directory. This is a "file
    doesn't exist" error for ordinary files that are referenced in
    contexts where they are expected to already exist.
</td>
</tr>
<tr>
<td><p><a name="G-FILE-ERROR-NOTDIR:CAPS"></a><span class="term"><code class="literal">G_FILE_ERROR_NOTDIR</code></span></p></td>
<td>A file that isn't a directory was specified when
    a directory is required.
</td>
</tr>
<tr>
<td><p><a name="G-FILE-ERROR-NXIO:CAPS"></a><span class="term"><code class="literal">G_FILE_ERROR_NXIO</code></span></p></td>
<td>No such device or address. The system tried to
    use the device represented by a file you specified, and it
    couldn't find the device. This can mean that the device file was
    installed incorrectly, or that the physical device is missing or
    not correctly attached to the computer.
</td>
</tr>
<tr>
<td><p><a name="G-FILE-ERROR-NODEV:CAPS"></a><span class="term"><code class="literal">G_FILE_ERROR_NODEV</code></span></p></td>
<td>The underlying file system of the specified file
    does not support memory mapping.
</td>
</tr>
<tr>
<td><p><a name="G-FILE-ERROR-ROFS:CAPS"></a><span class="term"><code class="literal">G_FILE_ERROR_ROFS</code></span></p></td>
<td>The directory containing the new link can't be
    modified because it's on a read-only file system.
</td>
</tr>
<tr>
<td><p><a name="G-FILE-ERROR-TXTBSY:CAPS"></a><span class="term"><code class="literal">G_FILE_ERROR_TXTBSY</code></span></p></td>
<td>Text file busy.
</td>
</tr>
<tr>
<td><p><a name="G-FILE-ERROR-FAULT:CAPS"></a><span class="term"><code class="literal">G_FILE_ERROR_FAULT</code></span></p></td>
<td>You passed in a pointer to bad memory.
    (GLib won't reliably return this, don't pass in pointers to bad
    memory.)
</td>
</tr>
<tr>
<td><p><a name="G-FILE-ERROR-LOOP:CAPS"></a><span class="term"><code class="literal">G_FILE_ERROR_LOOP</code></span></p></td>
<td>Too many levels of symbolic links were encountered
    in looking up a file name. This often indicates a cycle of symbolic
    links.
</td>
</tr>
<tr>
<td><p><a name="G-FILE-ERROR-NOSPC:CAPS"></a><span class="term"><code class="literal">G_FILE_ERROR_NOSPC</code></span></p></td>
<td>No space left on device; write operation on a
    file failed because the disk is full.
</td>
</tr>
<tr>
<td><p><a name="G-FILE-ERROR-NOMEM:CAPS"></a><span class="term"><code class="literal">G_FILE_ERROR_NOMEM</code></span></p></td>
<td>No memory available. The system cannot allocate
    more virtual memory because its capacity is full.
</td>
</tr>
<tr>
<td><p><a name="G-FILE-ERROR-MFILE:CAPS"></a><span class="term"><code class="literal">G_FILE_ERROR_MFILE</code></span></p></td>
<td>The current process has too many files open and
    can't open any more. Duplicate descriptors do count toward this
    limit.
</td>
</tr>
<tr>
<td><p><a name="G-FILE-ERROR-NFILE:CAPS"></a><span class="term"><code class="literal">G_FILE_ERROR_NFILE</code></span></p></td>
<td>There are too many distinct file openings in the
    entire system.
</td>
</tr>
<tr>
<td><p><a name="G-FILE-ERROR-BADF:CAPS"></a><span class="term"><code class="literal">G_FILE_ERROR_BADF</code></span></p></td>
<td>Bad file descriptor; for example, I/O on a
    descriptor that has been closed or reading from a descriptor open
    only for writing (or vice versa).
</td>
</tr>
<tr>
<td><p><a name="G-FILE-ERROR-INVAL:CAPS"></a><span class="term"><code class="literal">G_FILE_ERROR_INVAL</code></span></p></td>
<td>Invalid argument. This is used to indicate
    various kinds of problems with passing the wrong argument to a
    library function.
</td>
</tr>
<tr>
<td><p><a name="G-FILE-ERROR-PIPE:CAPS"></a><span class="term"><code class="literal">G_FILE_ERROR_PIPE</code></span></p></td>
<td>Broken pipe; there is no process reading from the
    other end of a pipe. Every library function that returns this
    error code also generates a `SIGPIPE' signal; this signal
    terminates the program if not handled or blocked. Thus, your
    program will never actually see this code unless it has handled
    or blocked `SIGPIPE'.
</td>
</tr>
<tr>
<td><p><a name="G-FILE-ERROR-AGAIN:CAPS"></a><span class="term"><code class="literal">G_FILE_ERROR_AGAIN</code></span></p></td>
<td>Resource temporarily unavailable; the call might
    work if you try again later.
</td>
</tr>
<tr>
<td><p><a name="G-FILE-ERROR-INTR:CAPS"></a><span class="term"><code class="literal">G_FILE_ERROR_INTR</code></span></p></td>
<td>Interrupted function call; an asynchronous signal
    occurred and prevented completion of the call. When this
    happens, you should try the call again.
</td>
</tr>
<tr>
<td><p><a name="G-FILE-ERROR-IO:CAPS"></a><span class="term"><code class="literal">G_FILE_ERROR_IO</code></span></p></td>
<td>Input/output error; usually used for physical read
   or write errors. i.e. the disk or other physical device hardware
   is returning errors.
</td>
</tr>
<tr>
<td><p><a name="G-FILE-ERROR-PERM:CAPS"></a><span class="term"><code class="literal">G_FILE_ERROR_PERM</code></span></p></td>
<td>Operation not permitted; only the owner of the
   file (or other resource) or processes with special privileges can
   perform the operation.
</td>
</tr>
<tr>
<td><p><a name="G-FILE-ERROR-NOSYS:CAPS"></a><span class="term"><code class="literal">G_FILE_ERROR_NOSYS</code></span></p></td>
<td>Function not implemented; this indicates that
   the system is missing some functionality.
</td>
</tr>
<tr>
<td><p><a name="G-FILE-ERROR-FAILED:CAPS"></a><span class="term"><code class="literal">G_FILE_ERROR_FAILED</code></span></p></td>
<td>Does not correspond to a UNIX error code; this
   is the standard "failed for unspecified reason" error code present
   in all <a class="link" href="glib-Error-Reporting.html#GError" title="struct GError"><span class="type">GError</span></a> error code enumerations. Returned if no specific
   code applies.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="G-FILE-ERROR:CAPS"></a><h3>G_FILE_ERROR</h3>
<pre class="programlisting">#define G_FILE_ERROR g_file_error_quark ()
</pre>
<p>
Error domain for file operations. Errors in this domain will
be from the <a class="link" href="glib-File-Utilities.html#GFileError" title="enum GFileError"><span class="type">GFileError</span></a> enumeration. See <a class="link" href="glib-Error-Reporting.html#GError" title="struct GError"><span class="type">GError</span></a> for information
on error domains.
</p>
</div>
<hr>
<div class="refsect2">
<a name="GFileTest"></a><h3>enum GFileTest</h3>
<pre class="programlisting">typedef enum {
  G_FILE_TEST_IS_REGULAR    = 1 &lt;&lt; 0,
  G_FILE_TEST_IS_SYMLINK    = 1 &lt;&lt; 1,
  G_FILE_TEST_IS_DIR        = 1 &lt;&lt; 2,
  G_FILE_TEST_IS_EXECUTABLE = 1 &lt;&lt; 3,
  G_FILE_TEST_EXISTS        = 1 &lt;&lt; 4
} GFileTest;
</pre>
<p>
A test to perform on a file using <a class="link" href="glib-File-Utilities.html#g-file-test" title="g_file_test ()"><code class="function">g_file_test()</code></a>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><a name="G-FILE-TEST-IS-REGULAR:CAPS"></a><span class="term"><code class="literal">G_FILE_TEST_IS_REGULAR</code></span></p></td>
<td>
<a class="link" href="glib-Standard-Macros.html#TRUE:CAPS" title="TRUE"><code class="literal">TRUE</code></a> if the file is a regular file
    (not a directory). Note that this test will also return <a class="link" href="glib-Standard-Macros.html#TRUE:CAPS" title="TRUE"><code class="literal">TRUE</code></a>
    if the tested file is a symlink to a regular file.
</td>
</tr>
<tr>
<td><p><a name="G-FILE-TEST-IS-SYMLINK:CAPS"></a><span class="term"><code class="literal">G_FILE_TEST_IS_SYMLINK</code></span></p></td>
<td>
<a class="link" href="glib-Standard-Macros.html#TRUE:CAPS" title="TRUE"><code class="literal">TRUE</code></a> if the file is a symlink.
</td>
</tr>
<tr>
<td><p><a name="G-FILE-TEST-IS-DIR:CAPS"></a><span class="term"><code class="literal">G_FILE_TEST_IS_DIR</code></span></p></td>
<td>
<a class="link" href="glib-Standard-Macros.html#TRUE:CAPS" title="TRUE"><code class="literal">TRUE</code></a> if the file is a directory.
</td>
</tr>
<tr>
<td><p><a name="G-FILE-TEST-IS-EXECUTABLE:CAPS"></a><span class="term"><code class="literal">G_FILE_TEST_IS_EXECUTABLE</code></span></p></td>
<td>
<a class="link" href="glib-Standard-Macros.html#TRUE:CAPS" title="TRUE"><code class="literal">TRUE</code></a> if the file is executable.
</td>
</tr>
<tr>
<td><p><a name="G-FILE-TEST-EXISTS:CAPS"></a><span class="term"><code class="literal">G_FILE_TEST_EXISTS</code></span></p></td>
<td>
<a class="link" href="glib-Standard-Macros.html#TRUE:CAPS" title="TRUE"><code class="literal">TRUE</code></a> if the file exists. It may or may not
    be a regular file.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="g-file-error-from-errno"></a><h3>g_file_error_from_errno ()</h3>
<pre class="programlisting"><a class="link" href="glib-File-Utilities.html#GFileError" title="enum GFileError"><span class="returnvalue">GFileError</span></a>          g_file_error_from_errno             (<em class="parameter"><code><a class="link" href="glib-Basic-Types.html#gint" title="gint"><span class="type">gint</span></a> err_no</code></em>);</pre>
<p>
Gets a <a class="link" href="glib-File-Utilities.html#GFileError" title="enum GFileError"><span class="type">GFileError</span></a> constant based on the passed-in <em class="parameter"><code>err_no</code></em>.
For example, if you pass in <code class="literal">EEXIST</code> this function returns
<a class="link" href="glib-File-Utilities.html#G-FILE-ERROR-EXIST:CAPS"><span class="type">G_FILE_ERROR_EXIST</span></a>. Unlike <code class="literal">errno</code> values, you can portably
assume that all <a class="link" href="glib-File-Utilities.html#GFileError" title="enum GFileError"><span class="type">GFileError</span></a> values will exist.
</p>
<p>
Normally a <a class="link" href="glib-File-Utilities.html#GFileError" title="enum GFileError"><span class="type">GFileError</span></a> value goes into a <a class="link" href="glib-Error-Reporting.html#GError" title="struct GError"><span class="type">GError</span></a> returned
from a function that manipulates files. So you would use
<a class="link" href="glib-File-Utilities.html#g-file-error-from-errno" title="g_file_error_from_errno ()"><code class="function">g_file_error_from_errno()</code></a> when constructing a <a class="link" href="glib-Error-Reporting.html#GError" title="struct GError"><span class="type">GError</span></a>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>err_no</code></em> :</span></p></td>
<td>an "errno" value</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>
<a class="link" href="glib-File-Utilities.html#GFileError" title="enum GFileError"><span class="type">GFileError</span></a> corresponding to the given <em class="parameter"><code>errno</code></em>
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="g-file-get-contents"></a><h3>g_file_get_contents ()</h3>
<pre class="programlisting"><a class="link" href="glib-Basic-Types.html#gboolean" title="gboolean"><span class="returnvalue">gboolean</span></a>            g_file_get_contents                 (<em class="parameter"><code>const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *filename</code></em>,
                                                         <em class="parameter"><code><a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> **contents</code></em>,
                                                         <em class="parameter"><code><a class="link" href="glib-Basic-Types.html#gsize" title="gsize"><span class="type">gsize</span></a> *length</code></em>,
                                                         <em class="parameter"><code><a class="link" href="glib-Error-Reporting.html#GError" title="struct GError"><span class="type">GError</span></a> **error</code></em>);</pre>
<p>
Reads an entire file into allocated memory, with good error
checking.
</p>
<p>
If the call was successful, it returns <a class="link" href="glib-Standard-Macros.html#TRUE:CAPS" title="TRUE"><code class="literal">TRUE</code></a> and sets <em class="parameter"><code>contents</code></em> to the file
contents and <em class="parameter"><code>length</code></em> to the length of the file contents in bytes. The string
stored in <em class="parameter"><code>contents</code></em> will be nul-terminated, so for text files you can pass
<a class="link" href="glib-Standard-Macros.html#NULL:CAPS" title="NULL"><code class="literal">NULL</code></a> for the <em class="parameter"><code>length</code></em> argument. If the call was not successful, it returns
<a class="link" href="glib-Standard-Macros.html#FALSE:CAPS" title="FALSE"><code class="literal">FALSE</code></a> and sets <em class="parameter"><code>error</code></em>. The error domain is <a class="link" href="glib-File-Utilities.html#G-FILE-ERROR:CAPS" title="G_FILE_ERROR"><span class="type">G_FILE_ERROR</span></a>. Possible error
codes are those in the <a class="link" href="glib-File-Utilities.html#GFileError" title="enum GFileError"><span class="type">GFileError</span></a> enumeration. In the error case,
<em class="parameter"><code>contents</code></em> is set to <a class="link" href="glib-Standard-Macros.html#NULL:CAPS" title="NULL"><code class="literal">NULL</code></a> and <em class="parameter"><code>length</code></em> is set to zero.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>filename</code></em> :</span></p></td>
<td>name of a file to read contents from, in the GLib file name encoding. <span class="annotation">[<acronym title="Override the parsed C type with given type"><span class="acronym">type</span></acronym> filename]</span>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>contents</code></em> :</span></p></td>
<td>location to store an allocated string, use <a class="link" href="glib-Memory-Allocation.html#g-free" title="g_free ()"><code class="function">g_free()</code></a> to free
the returned string. <span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>][<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> length=length][<acronym title="Generics and defining elements of containers and arrays."><span class="acronym">element-type</span></acronym> guint8]</span>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>length</code></em> :</span></p></td>
<td>location to store length in bytes of the contents, or <a class="link" href="glib-Standard-Macros.html#NULL:CAPS" title="NULL"><code class="literal">NULL</code></a>. <span class="annotation">[<acronym title="NULL is ok, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>error</code></em> :</span></p></td>
<td>返回<a class="link" href="glib-Error-Reporting.html#GError" title="struct GError"><span class="type">GError</span></a>的位置，或<a class="link" href="glib-Standard-Macros.html#NULL:CAPS" title="NULL"><code class="literal">NULL</code></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>
<a class="link" href="glib-Standard-Macros.html#TRUE:CAPS" title="TRUE"><code class="literal">TRUE</code></a> on success, <a class="link" href="glib-Standard-Macros.html#FALSE:CAPS" title="FALSE"><code class="literal">FALSE</code></a> if an error occurred</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="g-file-set-contents"></a><h3>g_file_set_contents ()</h3>
<pre class="programlisting"><a class="link" href="glib-Basic-Types.html#gboolean" title="gboolean"><span class="returnvalue">gboolean</span></a>            g_file_set_contents                 (<em class="parameter"><code>const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *filename</code></em>,
                                                         <em class="parameter"><code>const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *contents</code></em>,
                                                         <em class="parameter"><code><a class="link" href="glib-Basic-Types.html#gssize" title="gssize"><span class="type">gssize</span></a> length</code></em>,
                                                         <em class="parameter"><code><a class="link" href="glib-Error-Reporting.html#GError" title="struct GError"><span class="type">GError</span></a> **error</code></em>);</pre>
<p>
Writes all of <em class="parameter"><code>contents</code></em> to a file named <em class="parameter"><code>filename</code></em>, with good error checking.
If a file called <em class="parameter"><code>filename</code></em> already exists it will be overwritten.
</p>
<p>
This write is atomic in the sense that it is first written to a temporary
file which is then renamed to the final name. Notes:
</p>
<div class="itemizedlist"><ul class="itemizedlist" type="disc">
<li class="listitem">
   On Unix, if <em class="parameter"><code>filename</code></em> already exists hard links to <em class="parameter"><code>filename</code></em> will break.
   Also since the file is recreated, existing permissions, access control
   lists, metadata etc. may be lost. If <em class="parameter"><code>filename</code></em> is a symbolic link,
   the link itself will be replaced, not the linked file.
</li>
<li class="listitem">
  On Windows renaming a file will not remove an existing file with the
  new name, so on Windows there is a race condition between the existing
  file being removed and the temporary file being renamed.
</li>
<li class="listitem">
  On Windows there is no way to remove a file that is open to some
  process, or mapped into memory. Thus, this function will fail if
  <em class="parameter"><code>filename</code></em> already exists and is open.
</li>
</ul></div>
<p>
</p>
<p>
If the call was successful, it returns <a class="link" href="glib-Standard-Macros.html#TRUE:CAPS" title="TRUE"><code class="literal">TRUE</code></a>. If the call was not successful,
it returns <a class="link" href="glib-Standard-Macros.html#FALSE:CAPS" title="FALSE"><code class="literal">FALSE</code></a> and sets <em class="parameter"><code>error</code></em>. The error domain is <a class="link" href="glib-File-Utilities.html#G-FILE-ERROR:CAPS" title="G_FILE_ERROR"><span class="type">G_FILE_ERROR</span></a>.
Possible error codes are those in the <a class="link" href="glib-File-Utilities.html#GFileError" title="enum GFileError"><span class="type">GFileError</span></a> enumeration.
</p>
<p>
Note that the name for the temporary file is constructed by appending up
to 7 characters to <em class="parameter"><code>filename</code></em>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>filename</code></em> :</span></p></td>
<td>name of a file to write <em class="parameter"><code>contents</code></em> to, in the GLib file name
encoding. <span class="annotation">[<acronym title="Override the parsed C type with given type"><span class="acronym">type</span></acronym> filename]</span>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>contents</code></em> :</span></p></td>
<td>string to write to the file. <span class="annotation">[<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> length=length][<acronym title="Generics and defining elements of containers and arrays."><span class="acronym">element-type</span></acronym> guint8]</span>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>length</code></em> :</span></p></td>
<td>length of <em class="parameter"><code>contents</code></em>, or -1 if <em class="parameter"><code>contents</code></em> is a nul-terminated string</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>error</code></em> :</span></p></td>
<td>返回<a class="link" href="glib-Error-Reporting.html#GError" title="struct GError"><span class="type">GError</span></a>的位置，或<a class="link" href="glib-Standard-Macros.html#NULL:CAPS" title="NULL"><code class="literal">NULL</code></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>
<a class="link" href="glib-Standard-Macros.html#TRUE:CAPS" title="TRUE"><code class="literal">TRUE</code></a> on success, <a class="link" href="glib-Standard-Macros.html#FALSE:CAPS" title="FALSE"><code class="literal">FALSE</code></a> if an error occurred</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 2.8</p>
</div>
<hr>
<div class="refsect2">
<a name="g-file-test"></a><h3>g_file_test ()</h3>
<pre class="programlisting"><a class="link" href="glib-Basic-Types.html#gboolean" title="gboolean"><span class="returnvalue">gboolean</span></a>            g_file_test                         (<em class="parameter"><code>const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *filename</code></em>,
                                                         <em class="parameter"><code><a class="link" href="glib-File-Utilities.html#GFileTest" title="enum GFileTest"><span class="type">GFileTest</span></a> test</code></em>);</pre>
<p>
Returns <a class="link" href="glib-Standard-Macros.html#TRUE:CAPS" title="TRUE"><code class="literal">TRUE</code></a> if any of the tests in the bitfield <em class="parameter"><code>test</code></em> are
<a class="link" href="glib-Standard-Macros.html#TRUE:CAPS" title="TRUE"><code class="literal">TRUE</code></a>. For example, <code class="literal">(G_FILE_TEST_EXISTS | 
G_FILE_TEST_IS_DIR)</code> will return <a class="link" href="glib-Standard-Macros.html#TRUE:CAPS" title="TRUE"><code class="literal">TRUE</code></a> if the file exists; 
the check whether it's a directory doesn't matter since the existence 
test is <a class="link" href="glib-Standard-Macros.html#TRUE:CAPS" title="TRUE"><code class="literal">TRUE</code></a>. With the current set of available tests, there's no point
passing in more than one test at a time.
</p>
<p>
Apart from <a class="link" href="glib-File-Utilities.html#G-FILE-TEST-IS-SYMLINK:CAPS"><code class="literal">G_FILE_TEST_IS_SYMLINK</code></a> all tests follow symbolic links,
so for a symbolic link to a regular file <a class="link" href="glib-File-Utilities.html#g-file-test" title="g_file_test ()"><code class="function">g_file_test()</code></a> will return
<a class="link" href="glib-Standard-Macros.html#TRUE:CAPS" title="TRUE"><code class="literal">TRUE</code></a> for both <a class="link" href="glib-File-Utilities.html#G-FILE-TEST-IS-SYMLINK:CAPS"><code class="literal">G_FILE_TEST_IS_SYMLINK</code></a> and <a class="link" href="glib-File-Utilities.html#G-FILE-TEST-IS-REGULAR:CAPS"><code class="literal">G_FILE_TEST_IS_REGULAR</code></a>.
</p>
<p>
Note, that for a dangling symbolic link <a class="link" href="glib-File-Utilities.html#g-file-test" title="g_file_test ()"><code class="function">g_file_test()</code></a> will return
<a class="link" href="glib-Standard-Macros.html#TRUE:CAPS" title="TRUE"><code class="literal">TRUE</code></a> for <a class="link" href="glib-File-Utilities.html#G-FILE-TEST-IS-SYMLINK:CAPS"><code class="literal">G_FILE_TEST_IS_SYMLINK</code></a> and <a class="link" href="glib-Standard-Macros.html#FALSE:CAPS" title="FALSE"><code class="literal">FALSE</code></a> for all other flags.
</p>
<p>
You should never use <a class="link" href="glib-File-Utilities.html#g-file-test" title="g_file_test ()"><code class="function">g_file_test()</code></a> to test whether it is safe
to perform an operation, because there is always the possibility
of the condition changing before you actually perform the operation.
For example, you might think you could use <a class="link" href="glib-File-Utilities.html#G-FILE-TEST-IS-SYMLINK:CAPS"><code class="literal">G_FILE_TEST_IS_SYMLINK</code></a>
to know whether it is safe to write to a file without being
tricked into writing into a different location. It doesn't work!
</p>
<div class="informalexample"><pre class="programlisting">
/* DON'T DO THIS */
 if (!g_file_test (filename, G_FILE_TEST_IS_SYMLINK)) 
   {
     fd = g_open (filename, O_WRONLY);
     /* write to fd */
   }
</pre></div>
<p>
</p>
<p>
Another thing to note is that <a class="link" href="glib-File-Utilities.html#G-FILE-TEST-EXISTS:CAPS"><code class="literal">G_FILE_TEST_EXISTS</code></a> and
<a class="link" href="glib-File-Utilities.html#G-FILE-TEST-IS-EXECUTABLE:CAPS"><code class="literal">G_FILE_TEST_IS_EXECUTABLE</code></a> are implemented using the <code class="function">access()</code>
system call. This usually doesn't matter, but if your program
is setuid or setgid it means that these tests will give you
the answer for the real user ID and group ID, rather than the
effective user ID and group ID.
</p>
<p>
On Windows, there are no symlinks, so testing for
<a class="link" href="glib-File-Utilities.html#G-FILE-TEST-IS-SYMLINK:CAPS"><code class="literal">G_FILE_TEST_IS_SYMLINK</code></a> will always return <a class="link" href="glib-Standard-Macros.html#FALSE:CAPS" title="FALSE"><code class="literal">FALSE</code></a>. Testing for
<a class="link" href="glib-File-Utilities.html#G-FILE-TEST-IS-EXECUTABLE:CAPS"><code class="literal">G_FILE_TEST_IS_EXECUTABLE</code></a> will just check that the file exists and
its name indicates that it is executable, checking for well-known
extensions and those listed in the <code class="envar">PATHEXT</code> environment variable.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>filename</code></em> :</span></p></td>
<td>a filename to test in the GLib file name encoding</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>test</code></em> :</span></p></td>
<td>bitfield of <a class="link" href="glib-File-Utilities.html#GFileTest" title="enum GFileTest"><span class="type">GFileTest</span></a> flags</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>whether a test was <a class="link" href="glib-Standard-Macros.html#TRUE:CAPS" title="TRUE"><code class="literal">TRUE</code></a>
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="g-mkstemp"></a><h3>g_mkstemp ()</h3>
<pre class="programlisting"><a class="link" href="glib-Basic-Types.html#gint" title="gint"><span class="returnvalue">gint</span></a>                g_mkstemp                           (<em class="parameter"><code><a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *tmpl</code></em>);</pre>
<p>
Opens a temporary file. See the <code class="function">mkstemp()</code> documentation
on most UNIX-like systems.
</p>
<p>
The parameter is a string that should follow the rules for
<code class="function">mkstemp()</code> templates, i.e. contain the string "XXXXXX".
<a class="link" href="glib-File-Utilities.html#g-mkstemp" title="g_mkstemp ()"><code class="function">g_mkstemp()</code></a> is slightly more flexible than <code class="function">mkstemp()</code> in that the
sequence does not have to occur at the very end of the template.
The X string will be modified to form the name of a file that
didn't exist. The string should be in the GLib file name encoding.
Most importantly, on Windows it should be in UTF-8.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>tmpl</code></em> :</span></p></td>
<td>template filename. <span class="annotation">[<acronym title="Override the parsed C type with given type"><span class="acronym">type</span></acronym> filename]</span>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>A file handle (as from <code class="function">open()</code>) to the file
opened for reading and writing. The file is opened in binary
mode on platforms where there is a difference. The file handle
should be closed with <code class="function">close()</code>. In case of errors, -1 is
returned and <code class="literal">errno</code> will be set.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="g-mkstemp-full"></a><h3>g_mkstemp_full ()</h3>
<pre class="programlisting"><a class="link" href="glib-Basic-Types.html#gint" title="gint"><span class="returnvalue">gint</span></a>                g_mkstemp_full                      (<em class="parameter"><code><a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *tmpl</code></em>,
                                                         <em class="parameter"><code><a class="link" href="glib-Basic-Types.html#gint" title="gint"><span class="type">gint</span></a> flags</code></em>,
                                                         <em class="parameter"><code><a class="link" href="glib-Basic-Types.html#gint" title="gint"><span class="type">gint</span></a> mode</code></em>);</pre>
<p>
Opens a temporary file. See the <code class="function">mkstemp()</code> documentation
on most UNIX-like systems.
</p>
<p>
The parameter is a string that should follow the rules for
<code class="function">mkstemp()</code> templates, i.e. contain the string "XXXXXX".
<a class="link" href="glib-File-Utilities.html#g-mkstemp-full" title="g_mkstemp_full ()"><code class="function">g_mkstemp_full()</code></a> is slightly more flexible than <code class="function">mkstemp()</code>
in that the sequence does not have to occur at the very end of the
template and you can pass a <em class="parameter"><code>mode</code></em> and additional <em class="parameter"><code>flags</code></em>. The X
string will be modified to form the name of a file that didn't exist.
The string should be in the GLib file name encoding. Most importantly,
on Windows it should be in UTF-8.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>tmpl</code></em> :</span></p></td>
<td>template filename. <span class="annotation">[<acronym title="Override the parsed C type with given type"><span class="acronym">type</span></acronym> filename]</span>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>flags</code></em> :</span></p></td>
<td>flags to pass to an <code class="function">open()</code> call in addition to O_EXCL
and O_CREAT, which are passed automatically</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>mode</code></em> :</span></p></td>
<td>permissions to create the temporary file with</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>A file handle (as from <code class="function">open()</code>) to the file
opened for reading and writing. The file handle should be
closed with <code class="function">close()</code>. In case of errors, -1 is returned
and <code class="literal">errno</code> will be set.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 2.22</p>
</div>
<hr>
<div class="refsect2">
<a name="g-file-open-tmp"></a><h3>g_file_open_tmp ()</h3>
<pre class="programlisting"><a class="link" href="glib-Basic-Types.html#gint" title="gint"><span class="returnvalue">gint</span></a>                g_file_open_tmp                     (<em class="parameter"><code>const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *tmpl</code></em>,
                                                         <em class="parameter"><code><a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> **name_used</code></em>,
                                                         <em class="parameter"><code><a class="link" href="glib-Error-Reporting.html#GError" title="struct GError"><span class="type">GError</span></a> **error</code></em>);</pre>
<p>
Opens a file for writing in the preferred directory for temporary
files (as returned by <a class="link" href="glib-Miscellaneous-Utility-Functions.html#g-get-tmp-dir" title="g_get_tmp_dir ()"><code class="function">g_get_tmp_dir()</code></a>).
</p>
<p>
<em class="parameter"><code>tmpl</code></em> should be a string in the GLib file name encoding containing
a sequence of six 'X' characters, as the parameter to <a class="link" href="glib-File-Utilities.html#g-mkstemp" title="g_mkstemp ()"><code class="function">g_mkstemp()</code></a>.
However, unlike these functions, the template should only be a
basename, no directory components are allowed. If template is
<a class="link" href="glib-Standard-Macros.html#NULL:CAPS" title="NULL"><code class="literal">NULL</code></a>, a default template is used.
</p>
<p>
Note that in contrast to <a class="link" href="glib-File-Utilities.html#g-mkstemp" title="g_mkstemp ()"><code class="function">g_mkstemp()</code></a> (and <code class="function">mkstemp()</code>) <em class="parameter"><code>tmpl</code></em> is not
modified, and might thus be a read-only literal string.
</p>
<p>
Upon success, and if <em class="parameter"><code>name_used</code></em> is non-<a class="link" href="glib-Standard-Macros.html#NULL:CAPS" title="NULL"><code class="literal">NULL</code></a>, the actual name used
is returned in <em class="parameter"><code>name_used</code></em>. This string should be freed with <a class="link" href="glib-Memory-Allocation.html#g-free" title="g_free ()"><code class="function">g_free()</code></a>
when not needed any longer. The returned name is in the GLib file
name encoding.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>tmpl</code></em> :</span></p></td>
<td>Template for file name, as in
<a class="link" href="glib-File-Utilities.html#g-mkstemp" title="g_mkstemp ()"><code class="function">g_mkstemp()</code></a>, basename only, or <a class="link" href="glib-Standard-Macros.html#NULL:CAPS" title="NULL"><code class="literal">NULL</code></a> for a default template. <span class="annotation">[<acronym title="Override the parsed C type with given type"><span class="acronym">type</span></acronym> filename][<acronym title="NULL is ok, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>name_used</code></em> :</span></p></td>
<td>location to store actual name used,
or <a class="link" href="glib-Standard-Macros.html#NULL:CAPS" title="NULL"><code class="literal">NULL</code></a>. <span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>][<acronym title="Override the parsed C type with given type"><span class="acronym">type</span></acronym> filename]</span>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>error</code></em> :</span></p></td>
<td>return location for a <a class="link" href="glib-Error-Reporting.html#GError" title="struct GError"><span class="type">GError</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>A file handle (as from <code class="function">open()</code>) to the file opened for
reading and writing. The file is opened in binary mode on platforms
where there is a difference. The file handle should be closed with
<code class="function">close()</code>. In case of errors, -1 is returned and <em class="parameter"><code>error</code></em> will be set.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="g-file-read-link"></a><h3>g_file_read_link ()</h3>
<pre class="programlisting"><a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="returnvalue">gchar</span></a> *             g_file_read_link                    (<em class="parameter"><code>const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *filename</code></em>,
                                                         <em class="parameter"><code><a class="link" href="glib-Error-Reporting.html#GError" title="struct GError"><span class="type">GError</span></a> **error</code></em>);</pre>
<p>
Reads the contents of the symbolic link <em class="parameter"><code>filename</code></em> like the POSIX
<code class="function">readlink()</code> function.  The returned string is in the encoding used
for filenames. Use <a class="link" href="glib-Character-Set-Conversion.html#g-filename-to-utf8" title="g_filename_to_utf8 ()"><code class="function">g_filename_to_utf8()</code></a> to convert it to UTF-8.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>filename</code></em> :</span></p></td>
<td>the symbolic link</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>error</code></em> :</span></p></td>
<td>return location for a <a class="link" href="glib-Error-Reporting.html#GError" title="struct GError"><span class="type">GError</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>A newly-allocated string with the contents of the symbolic link,
or <a class="link" href="glib-Standard-Macros.html#NULL:CAPS" title="NULL"><code class="literal">NULL</code></a> if an error occurred.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 2.4</p>
</div>
<hr>
<div class="refsect2">
<a name="g-mkdir-with-parents"></a><h3>g_mkdir_with_parents ()</h3>
<pre class="programlisting"><a class="link" href="glib-Basic-Types.html#gint" title="gint"><span class="returnvalue">gint</span></a>                g_mkdir_with_parents                (<em class="parameter"><code>const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *pathname</code></em>,
                                                         <em class="parameter"><code><a class="link" href="glib-Basic-Types.html#gint" title="gint"><span class="type">gint</span></a> mode</code></em>);</pre>
<p>
Create a directory if it doesn't already exist. Create intermediate
parent directories as needed, too.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>pathname</code></em> :</span></p></td>
<td>a pathname in the GLib file name encoding</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>mode</code></em> :</span></p></td>
<td>permissions to use for newly created directories</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>0 if the directory already exists, or was successfully
created. Returns -1 if an error occurred, with errno set.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 2.8</p>
</div>
<hr>
<div class="refsect2">
<a name="g-mkdtemp"></a><h3>g_mkdtemp ()</h3>
<pre class="programlisting"><a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="returnvalue">gchar</span></a> *             g_mkdtemp                           (<em class="parameter"><code><a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *tmpl</code></em>);</pre>
<p>
Creates a temporary directory. See the <code class="function">mkdtemp()</code> documentation
on most UNIX-like systems.
</p>
<p>
The parameter is a string that should follow the rules for
<code class="function">mkdtemp()</code> templates, i.e. contain the string "XXXXXX".
<a class="link" href="glib-File-Utilities.html#g-mkdtemp" title="g_mkdtemp ()"><code class="function">g_mkdtemp()</code></a> is slightly more flexible than <code class="function">mkdtemp()</code> in that the
sequence does not have to occur at the very end of the template
and you can pass a <em class="parameter"><code>mode</code></em> and additional <em class="parameter"><code>flags</code></em>. The X string will
be modified to form the name of a directory that didn't exist.
The string should be in the GLib file name encoding. Most importantly,
on Windows it should be in UTF-8.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>tmpl</code></em> :</span></p></td>
<td>template directory name. <span class="annotation">[<acronym title="Override the parsed C type with given type"><span class="acronym">type</span></acronym> filename]</span>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>A pointer to <em class="parameter"><code>tmpl</code></em>, which has been modified
to hold the directory name.  In case of errors, <a class="link" href="glib-Standard-Macros.html#NULL:CAPS" title="NULL"><code class="literal">NULL</code></a> is
returned and <code class="literal">errno</code> will be set.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 2.30</p>
</div>
<hr>
<div class="refsect2">
<a name="g-mkdtemp-full"></a><h3>g_mkdtemp_full ()</h3>
<pre class="programlisting"><a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="returnvalue">gchar</span></a> *             g_mkdtemp_full                      (<em class="parameter"><code><a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *tmpl</code></em>,
                                                         <em class="parameter"><code><a class="link" href="glib-Basic-Types.html#gint" title="gint"><span class="type">gint</span></a> mode</code></em>);</pre>
<p>
Creates a temporary directory. See the <code class="function">mkdtemp()</code> documentation
on most UNIX-like systems.
</p>
<p>
The parameter is a string that should follow the rules for
<code class="function">mkdtemp()</code> templates, i.e. contain the string "XXXXXX".
<a class="link" href="glib-File-Utilities.html#g-mkdtemp" title="g_mkdtemp ()"><code class="function">g_mkdtemp()</code></a> is slightly more flexible than <code class="function">mkdtemp()</code> in that the
sequence does not have to occur at the very end of the template
and you can pass a <em class="parameter"><code>mode</code></em>. The X string will be modified to form
the name of a directory that didn't exist. The string should be
in the GLib file name encoding. Most importantly, on Windows it
should be in UTF-8.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>tmpl</code></em> :</span></p></td>
<td>template directory name. <span class="annotation">[<acronym title="Override the parsed C type with given type"><span class="acronym">type</span></acronym> filename]</span>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>mode</code></em> :</span></p></td>
<td>permissions to create the temporary directory with</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>A pointer to <em class="parameter"><code>tmpl</code></em>, which has been modified
to hold the directory name. In case of errors, <a class="link" href="glib-Standard-Macros.html#NULL:CAPS" title="NULL"><code class="literal">NULL</code></a> is
returned, and <code class="literal">errno</code> will be set.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 2.30</p>
</div>
<hr>
<div class="refsect2">
<a name="g-dir-make-tmp"></a><h3>g_dir_make_tmp ()</h3>
<pre class="programlisting"><a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="returnvalue">gchar</span></a> *             g_dir_make_tmp                      (<em class="parameter"><code>const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *tmpl</code></em>,
                                                         <em class="parameter"><code><a class="link" href="glib-Error-Reporting.html#GError" title="struct GError"><span class="type">GError</span></a> **error</code></em>);</pre>
<p>
Creates a subdirectory in the preferred directory for temporary
files (as returned by <a class="link" href="glib-Miscellaneous-Utility-Functions.html#g-get-tmp-dir" title="g_get_tmp_dir ()"><code class="function">g_get_tmp_dir()</code></a>).
</p>
<p>
<em class="parameter"><code>tmpl</code></em> should be a string in the GLib file name encoding containing
a sequence of six 'X' characters, as the parameter to <a class="link" href="glib-File-Utilities.html#g-mkstemp" title="g_mkstemp ()"><code class="function">g_mkstemp()</code></a>.
However, unlike these functions, the template should only be a
basename, no directory components are allowed. If template is
<a class="link" href="glib-Standard-Macros.html#NULL:CAPS" title="NULL"><code class="literal">NULL</code></a>, a default template is used.
</p>
<p>
Note that in contrast to <a class="link" href="glib-File-Utilities.html#g-mkdtemp" title="g_mkdtemp ()"><code class="function">g_mkdtemp()</code></a> (and <code class="function">mkdtemp()</code>) <em class="parameter"><code>tmpl</code></em> is not
modified, and might thus be a read-only literal string.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>tmpl</code></em> :</span></p></td>
<td>Template for directory name,
as in <a class="link" href="glib-File-Utilities.html#g-mkdtemp" title="g_mkdtemp ()"><code class="function">g_mkdtemp()</code></a>, basename only, or <a class="link" href="glib-Standard-Macros.html#NULL:CAPS" title="NULL"><code class="literal">NULL</code></a> for a default template. <span class="annotation">[<acronym title="Override the parsed C type with given type"><span class="acronym">type</span></acronym> filename][<acronym title="NULL is ok, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>error</code></em> :</span></p></td>
<td>return location for a <a class="link" href="glib-Error-Reporting.html#GError" title="struct GError"><span class="type">GError</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>The actual name used. This string
should be freed with <a class="link" href="glib-Memory-Allocation.html#g-free" title="g_free ()"><code class="function">g_free()</code></a> when not needed any longer and is
is in the GLib file name encoding. In case of errors, <a class="link" href="glib-Standard-Macros.html#NULL:CAPS" title="NULL"><code class="literal">NULL</code></a> is
returned and <em class="parameter"><code>error</code></em> will be set. <span class="annotation">[<acronym title="Override the parsed C type with given type"><span class="acronym">type</span></acronym> filename]</span>
</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 2.30</p>
</div>
<hr>
<div class="refsect2">
<a name="GDir"></a><h3>GDir</h3>
<pre class="programlisting">typedef struct _GDir GDir;</pre>
<p>
An opaque structure representing an opened directory.
</p>
</div>
<hr>
<div class="refsect2">
<a name="g-dir-open"></a><h3>g_dir_open ()</h3>
<pre class="programlisting"><a class="link" href="glib-File-Utilities.html#GDir" title="GDir"><span class="returnvalue">GDir</span></a> *              g_dir_open                          (<em class="parameter"><code>const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *path</code></em>,
                                                         <em class="parameter"><code><a class="link" href="glib-Basic-Types.html#guint" title="guint"><span class="type">guint</span></a> flags</code></em>,
                                                         <em class="parameter"><code><a class="link" href="glib-Error-Reporting.html#GError" title="struct GError"><span class="type">GError</span></a> **error</code></em>);</pre>
<p>
Opens a directory for reading. The names of the files in the
directory can then be retrieved using <a class="link" href="glib-File-Utilities.html#g-dir-read-name" title="g_dir_read_name ()"><code class="function">g_dir_read_name()</code></a>.  Note
that the ordering is not defined.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>path</code></em> :</span></p></td>
<td>the path to the directory you are interested in. On Unix
in the on-disk encoding. On Windows in UTF-8</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>flags</code></em> :</span></p></td>
<td>Currently must be set to 0. Reserved for future use.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>error</code></em> :</span></p></td>
<td>return location for a <a class="link" href="glib-Error-Reporting.html#GError" title="struct GError"><span class="type">GError</span></a>, or <a class="link" href="glib-Standard-Macros.html#NULL:CAPS" title="NULL"><code class="literal">NULL</code></a>.
If non-<a class="link" href="glib-Standard-Macros.html#NULL:CAPS" title="NULL"><code class="literal">NULL</code></a>, an error will be set if and only if
<a class="link" href="glib-File-Utilities.html#g-dir-open" title="g_dir_open ()"><code class="function">g_dir_open()</code></a> fails.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>a newly allocated <a class="link" href="glib-File-Utilities.html#GDir" title="GDir"><span class="type">GDir</span></a> on success, <a class="link" href="glib-Standard-Macros.html#NULL:CAPS" title="NULL"><code class="literal">NULL</code></a> on failure.
If non-<a class="link" href="glib-Standard-Macros.html#NULL:CAPS" title="NULL"><code class="literal">NULL</code></a>, you must free the result with <a class="link" href="glib-File-Utilities.html#g-dir-close" title="g_dir_close ()"><code class="function">g_dir_close()</code></a>
when you are finished with it.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="g-dir-read-name"></a><h3>g_dir_read_name ()</h3>
<pre class="programlisting">const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="returnvalue">gchar</span></a> *       g_dir_read_name                     (<em class="parameter"><code><a class="link" href="glib-File-Utilities.html#GDir" title="GDir"><span class="type">GDir</span></a> *dir</code></em>);</pre>
<p>
Retrieves the name of another entry in the directory, or <a class="link" href="glib-Standard-Macros.html#NULL:CAPS" title="NULL"><code class="literal">NULL</code></a>.
The order of entries returned from this function is not defined,
and may vary by file system or other operating-system dependent
factors. 
</p>
<p>
On Unix, the '.' and '..' entries are omitted, and the returned
name is in the on-disk encoding.
</p>
<p>
On Windows, as is true of all GLib functions which operate on
filenames, the returned name is in UTF-8.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>dir</code></em> :</span></p></td>
<td>a <a class="link" href="glib-File-Utilities.html#GDir" title="GDir"><span class="type">GDir</span></a>* created by <a class="link" href="glib-File-Utilities.html#g-dir-open" title="g_dir_open ()"><code class="function">g_dir_open()</code></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>The entry's name or <a class="link" href="glib-Standard-Macros.html#NULL:CAPS" title="NULL"><code class="literal">NULL</code></a> if there are no
more entries. The return value is owned by GLib and
must not be modified or freed.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="g-dir-rewind"></a><h3>g_dir_rewind ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>                g_dir_rewind                        (<em class="parameter"><code><a class="link" href="glib-File-Utilities.html#GDir" title="GDir"><span class="type">GDir</span></a> *dir</code></em>);</pre>
<p>
Resets the given directory. The next call to <a class="link" href="glib-File-Utilities.html#g-dir-read-name" title="g_dir_read_name ()"><code class="function">g_dir_read_name()</code></a>
will return the first entry again.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><p><span class="term"><em class="parameter"><code>dir</code></em> :</span></p></td>
<td>a <a class="link" href="glib-File-Utilities.html#GDir" title="GDir"><span class="type">GDir</span></a>* created by <a class="link" href="glib-File-Utilities.html#g-dir-open" title="g_dir_open ()"><code class="function">g_dir_open()</code></a>
</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="g-dir-close"></a><h3>g_dir_close ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>                g_dir_close                         (<em class="parameter"><code><a class="link" href="glib-File-Utilities.html#GDir" title="GDir"><span class="type">GDir</span></a> *dir</code></em>);</pre>
<p>
Closes the directory and deallocates all related resources.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><p><span class="term"><em class="parameter"><code>dir</code></em> :</span></p></td>
<td>a <a class="link" href="glib-File-Utilities.html#GDir" title="GDir"><span class="type">GDir</span></a>* created by <a class="link" href="glib-File-Utilities.html#g-dir-open" title="g_dir_open ()"><code class="function">g_dir_open()</code></a>
</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="GMappedFile"></a><h3>GMappedFile</h3>
<pre class="programlisting">typedef struct _GMappedFile GMappedFile;</pre>
<p>
The <a class="link" href="glib-File-Utilities.html#GMappedFile" title="GMappedFile"><span class="type">GMappedFile</span></a> represents a file mapping created with
<a class="link" href="glib-File-Utilities.html#g-mapped-file-new" title="g_mapped_file_new ()"><code class="function">g_mapped_file_new()</code></a>. It has only private members and should
not be accessed directly.
</p>
</div>
<hr>
<div class="refsect2">
<a name="g-mapped-file-new"></a><h3>g_mapped_file_new ()</h3>
<pre class="programlisting"><a class="link" href="glib-File-Utilities.html#GMappedFile" title="GMappedFile"><span class="returnvalue">GMappedFile</span></a> *       g_mapped_file_new                   (<em class="parameter"><code>const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *filename</code></em>,
                                                         <em class="parameter"><code><a class="link" href="glib-Basic-Types.html#gboolean" title="gboolean"><span class="type">gboolean</span></a> writable</code></em>,
                                                         <em class="parameter"><code><a class="link" href="glib-Error-Reporting.html#GError" title="struct GError"><span class="type">GError</span></a> **error</code></em>);</pre>
<p>
Maps a file into memory. On UNIX, this is using the <code class="function">mmap()</code> function.
</p>
<p>
If <em class="parameter"><code>writable</code></em> is <a class="link" href="glib-Standard-Macros.html#TRUE:CAPS" title="TRUE"><code class="literal">TRUE</code></a>, the mapped buffer may be modified, otherwise
it is an error to modify the mapped buffer. Modifications to the buffer
are not visible to other processes mapping the same file, and are not
written back to the file.
</p>
<p>
Note that modifications of the underlying file might affect the contents
of the <a class="link" href="glib-File-Utilities.html#GMappedFile" title="GMappedFile"><span class="type">GMappedFile</span></a>. Therefore, mapping should only be used if the file
will not be modified, or if all modifications of the file are done
atomically (e.g. using <a class="link" href="glib-File-Utilities.html#g-file-set-contents" title="g_file_set_contents ()"><code class="function">g_file_set_contents()</code></a>).
</p>
<p>
If <em class="parameter"><code>filename</code></em> is the name of an empty, regular file, the function
will successfully return an empty <a class="link" href="glib-File-Utilities.html#GMappedFile" title="GMappedFile"><span class="type">GMappedFile</span></a>. In other cases of
size 0 (e.g. device files such as /dev/null), <em class="parameter"><code>error</code></em> will be set
to the <a class="link" href="glib-File-Utilities.html#GFileError" title="enum GFileError"><span class="type">GFileError</span></a> value <a class="link" href="glib-File-Utilities.html#G-FILE-ERROR-INVAL:CAPS"><span class="type">G_FILE_ERROR_INVAL</span></a>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>filename</code></em> :</span></p></td>
<td>The path of the file to load, in the GLib filename encoding</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>writable</code></em> :</span></p></td>
<td>whether the mapping should be writable</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>error</code></em> :</span></p></td>
<td>返回<a class="link" href="glib-Error-Reporting.html#GError" title="struct GError"><span class="type">GError</span></a>的位置，或<a class="link" href="glib-Standard-Macros.html#NULL:CAPS" title="NULL"><code class="literal">NULL</code></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>a newly allocated <a class="link" href="glib-File-Utilities.html#GMappedFile" title="GMappedFile"><span class="type">GMappedFile</span></a> which must be unref'd
with <a class="link" href="glib-File-Utilities.html#g-mapped-file-unref" title="g_mapped_file_unref ()"><code class="function">g_mapped_file_unref()</code></a>, or <a class="link" href="glib-Standard-Macros.html#NULL:CAPS" title="NULL"><code class="literal">NULL</code></a> if the mapping failed.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 2.8</p>
</div>
<hr>
<div class="refsect2">
<a name="g-mapped-file-new-from-fd"></a><h3>g_mapped_file_new_from_fd ()</h3>
<pre class="programlisting"><a class="link" href="glib-File-Utilities.html#GMappedFile" title="GMappedFile"><span class="returnvalue">GMappedFile</span></a> *       g_mapped_file_new_from_fd           (<em class="parameter"><code><a class="link" href="glib-Basic-Types.html#gint" title="gint"><span class="type">gint</span></a> fd</code></em>,
                                                         <em class="parameter"><code><a class="link" href="glib-Basic-Types.html#gboolean" title="gboolean"><span class="type">gboolean</span></a> writable</code></em>,
                                                         <em class="parameter"><code><a class="link" href="glib-Error-Reporting.html#GError" title="struct GError"><span class="type">GError</span></a> **error</code></em>);</pre>
<p>
Maps a file into memory. On UNIX, this is using the <code class="function">mmap()</code> function.
</p>
<p>
If <em class="parameter"><code>writable</code></em> is <a class="link" href="glib-Standard-Macros.html#TRUE:CAPS" title="TRUE"><code class="literal">TRUE</code></a>, the mapped buffer may be modified, otherwise
it is an error to modify the mapped buffer. Modifications to the buffer
are not visible to other processes mapping the same file, and are not
written back to the file.
</p>
<p>
Note that modifications of the underlying file might affect the contents
of the <a class="link" href="glib-File-Utilities.html#GMappedFile" title="GMappedFile"><span class="type">GMappedFile</span></a>. Therefore, mapping should only be used if the file
will not be modified, or if all modifications of the file are done
atomically (e.g. using <a class="link" href="glib-File-Utilities.html#g-file-set-contents" title="g_file_set_contents ()"><code class="function">g_file_set_contents()</code></a>).
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>fd</code></em> :</span></p></td>
<td>The file descriptor of the file to load</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>writable</code></em> :</span></p></td>
<td>whether the mapping should be writable</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>error</code></em> :</span></p></td>
<td>返回<a class="link" href="glib-Error-Reporting.html#GError" title="struct GError"><span class="type">GError</span></a>的位置，或<a class="link" href="glib-Standard-Macros.html#NULL:CAPS" title="NULL"><code class="literal">NULL</code></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>a newly allocated <a class="link" href="glib-File-Utilities.html#GMappedFile" title="GMappedFile"><span class="type">GMappedFile</span></a> which must be unref'd
with <a class="link" href="glib-File-Utilities.html#g-mapped-file-unref" title="g_mapped_file_unref ()"><code class="function">g_mapped_file_unref()</code></a>, or <a class="link" href="glib-Standard-Macros.html#NULL:CAPS" title="NULL"><code class="literal">NULL</code></a> if the mapping failed.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 2.32</p>
</div>
<hr>
<div class="refsect2">
<a name="g-mapped-file-ref"></a><h3>g_mapped_file_ref ()</h3>
<pre class="programlisting"><a class="link" href="glib-File-Utilities.html#GMappedFile" title="GMappedFile"><span class="returnvalue">GMappedFile</span></a> *       g_mapped_file_ref                   (<em class="parameter"><code><a class="link" href="glib-File-Utilities.html#GMappedFile" title="GMappedFile"><span class="type">GMappedFile</span></a> *file</code></em>);</pre>
<p>
Increments the reference count of <em class="parameter"><code>file</code></em> by one.  It is safe to call
this function from any thread.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>file</code></em> :</span></p></td>
<td>a <a class="link" href="glib-File-Utilities.html#GMappedFile" title="GMappedFile"><span class="type">GMappedFile</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>the passed in <a class="link" href="glib-File-Utilities.html#GMappedFile" title="GMappedFile"><span class="type">GMappedFile</span></a>.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 2.22</p>
</div>
<hr>
<div class="refsect2">
<a name="g-mapped-file-unref"></a><h3>g_mapped_file_unref ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>                g_mapped_file_unref                 (<em class="parameter"><code><a class="link" href="glib-File-Utilities.html#GMappedFile" title="GMappedFile"><span class="type">GMappedFile</span></a> *file</code></em>);</pre>
<p>
Decrements the reference count of <em class="parameter"><code>file</code></em> by one.  If the reference count
drops to 0, unmaps the buffer of <em class="parameter"><code>file</code></em> and frees it.
</p>
<p>
It is safe to call this function from any thread.
</p>
<p>
Since 2.22
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><p><span class="term"><em class="parameter"><code>file</code></em> :</span></p></td>
<td>a <a class="link" href="glib-File-Utilities.html#GMappedFile" title="GMappedFile"><span class="type">GMappedFile</span></a>
</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="g-mapped-file-free"></a><h3>g_mapped_file_free ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>                g_mapped_file_free                  (<em class="parameter"><code><a class="link" href="glib-File-Utilities.html#GMappedFile" title="GMappedFile"><span class="type">GMappedFile</span></a> *file</code></em>);</pre>
<div class="warning" style="margin-left: 0.5in; margin-right: 0.5in;">
<h3 class="title">Warning</h3>
<p><code class="literal">g_mapped_file_free</code> has been deprecated since version 2.22 and should not be used in newly-written code. Use <a class="link" href="glib-File-Utilities.html#g-mapped-file-unref" title="g_mapped_file_unref ()"><code class="function">g_mapped_file_unref()</code></a> instead.</p>
</div>
<p>
This call existed before <a class="link" href="glib-File-Utilities.html#GMappedFile" title="GMappedFile"><span class="type">GMappedFile</span></a> had refcounting and is currently
exactly the same as <a class="link" href="glib-File-Utilities.html#g-mapped-file-unref" title="g_mapped_file_unref ()"><code class="function">g_mapped_file_unref()</code></a>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><p><span class="term"><em class="parameter"><code>file</code></em> :</span></p></td>
<td>a <a class="link" href="glib-File-Utilities.html#GMappedFile" title="GMappedFile"><span class="type">GMappedFile</span></a>
</td>
</tr></tbody>
</table></div>
<p class="since">Since 2.8</p>
</div>
<hr>
<div class="refsect2">
<a name="g-mapped-file-get-length"></a><h3>g_mapped_file_get_length ()</h3>
<pre class="programlisting"><a class="link" href="glib-Basic-Types.html#gsize" title="gsize"><span class="returnvalue">gsize</span></a>               g_mapped_file_get_length            (<em class="parameter"><code><a class="link" href="glib-File-Utilities.html#GMappedFile" title="GMappedFile"><span class="type">GMappedFile</span></a> *file</code></em>);</pre>
<p>
Returns the length of the contents of a <a class="link" href="glib-File-Utilities.html#GMappedFile" title="GMappedFile"><span class="type">GMappedFile</span></a>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>file</code></em> :</span></p></td>
<td>a <a class="link" href="glib-File-Utilities.html#GMappedFile" title="GMappedFile"><span class="type">GMappedFile</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>the length of the contents of <em class="parameter"><code>file</code></em>.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 2.8</p>
</div>
<hr>
<div class="refsect2">
<a name="g-mapped-file-get-contents"></a><h3>g_mapped_file_get_contents ()</h3>
<pre class="programlisting"><a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="returnvalue">gchar</span></a> *             g_mapped_file_get_contents          (<em class="parameter"><code><a class="link" href="glib-File-Utilities.html#GMappedFile" title="GMappedFile"><span class="type">GMappedFile</span></a> *file</code></em>);</pre>
<p>
Returns the contents of a <a class="link" href="glib-File-Utilities.html#GMappedFile" title="GMappedFile"><span class="type">GMappedFile</span></a>. 
</p>
<p>
Note that the contents may not be zero-terminated,
even if the <a class="link" href="glib-File-Utilities.html#GMappedFile" title="GMappedFile"><span class="type">GMappedFile</span></a> is backed by a text file.
</p>
<p>
If the file is empty then <a class="link" href="glib-Standard-Macros.html#NULL:CAPS" title="NULL"><code class="literal">NULL</code></a> is returned.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>file</code></em> :</span></p></td>
<td>a <a class="link" href="glib-File-Utilities.html#GMappedFile" title="GMappedFile"><span class="type">GMappedFile</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>the contents of <em class="parameter"><code>file</code></em>, or <a class="link" href="glib-Standard-Macros.html#NULL:CAPS" title="NULL"><code class="literal">NULL</code></a>.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 2.8</p>
</div>
<hr>
<div class="refsect2">
<a name="g-open"></a><h3>g_open ()</h3>
<pre class="programlisting"><span class="returnvalue">int</span>                 g_open                              (<em class="parameter"><code>const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *filename</code></em>,
                                                         <em class="parameter"><code><span class="type">int</span> flags</code></em>,
                                                         <em class="parameter"><code><span class="type">int</span> mode</code></em>);</pre>
<p>
A wrapper for the POSIX <code class="function">open()</code> function. The <code class="function">open()</code> function is
used to convert a pathname into a file descriptor.
</p>
<p>
On POSIX systems file descriptors are implemented by the operating
system. On Windows, it's the C library that implements <code class="function">open()</code> and
file descriptors. The actual Win32 API for opening files is quite
different, see MSDN documentation for <code class="function">CreateFile()</code>. The Win32 API
uses file handles, which are more randomish integers, not small
integers like file descriptors.
</p>
<p>
Because file descriptors are specific to the C library on Windows,
the file descriptor returned by this function makes sense only to
functions in the same C library. Thus if the GLib-using code uses a
different C library than GLib does, the file descriptor returned by
this function cannot be passed to C library functions like <code class="function">write()</code>
or <code class="function">read()</code>.
</p>
<p>
See your C library manual for more details about <code class="function">open()</code>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>filename</code></em> :</span></p></td>
<td>a pathname in the GLib file name encoding (UTF-8 on Windows)</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>flags</code></em> :</span></p></td>
<td>和 <code class="function">open()</code> 函数中的相同</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>mode</code></em> :</span></p></td>
<td>和 <code class="function">open()</code> 函数中的相同</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>a new file descriptor, or -1 if an error occurred. The
return value can be used exactly like the return value from <code class="function">open()</code>.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 2.6</p>
</div>
<hr>
<div class="refsect2">
<a name="g-rename"></a><h3>g_rename ()</h3>
<pre class="programlisting"><span class="returnvalue">int</span>                 g_rename                            (<em class="parameter"><code>const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *oldfilename</code></em>,
                                                         <em class="parameter"><code>const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *newfilename</code></em>);</pre>
<p>
A wrapper for the POSIX <code class="function">rename()</code> function. The <code class="function">rename()</code> function 
renames a file, moving it between directories if required.
</p>
<p>
See your C library manual for more details about how <code class="function">rename()</code> works
on your system. It is not possible in general on Windows to rename
a file that is open to some process.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>oldfilename</code></em> :</span></p></td>
<td>a pathname in the GLib file name encoding (UTF-8 on Windows)</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>newfilename</code></em> :</span></p></td>
<td>a pathname in the GLib file name encoding</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>重命名成功返回 0, 如果发生错误返回 -1.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 2.6</p>
</div>
<hr>
<div class="refsect2">
<a name="g-mkdir"></a><h3>g_mkdir ()</h3>
<pre class="programlisting"><span class="returnvalue">int</span>                 g_mkdir                             (<em class="parameter"><code>const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *filename</code></em>,
                                                         <em class="parameter"><code><span class="type">int</span> mode</code></em>);</pre>
<p>
A wrapper for the POSIX <code class="function">mkdir()</code> function. The <code class="function">mkdir()</code> function 
attempts to create a directory with the given name and permissions.
The mode argument is ignored on Windows.
</p>
<p>
See your C library manual for more details about <code class="function">mkdir()</code>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>filename</code></em> :</span></p></td>
<td>a pathname in the GLib file name encoding (UTF-8 on Windows)</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>mode</code></em> :</span></p></td>
<td>permissions to use for the newly created directory</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>0 if the directory was successfully created, -1 if an error
occurred</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 2.6</p>
</div>
<hr>
<div class="refsect2">
<a name="GStatBuf"></a><h3>GStatBuf</h3>
<pre class="programlisting">typedef struct _stat32 GStatBuf;
</pre>
<p>
A type corresponding to the appropriate struct type for the stat
system call, depending on the platform and/or compiler being used.
</p>
<p>
See <a class="link" href="glib-File-Utilities.html#g-stat" title="g_stat ()"><code class="function">g_stat()</code></a> for more information.
</p>
</div>
<hr>
<div class="refsect2">
<a name="g-stat"></a><h3>g_stat ()</h3>
<pre class="programlisting"><span class="returnvalue">int</span>                 g_stat                              (<em class="parameter"><code>const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *filename</code></em>,
                                                         <em class="parameter"><code><a class="link" href="glib-File-Utilities.html#GStatBuf" title="GStatBuf"><span class="type">GStatBuf</span></a> *buf</code></em>);</pre>
<p>
A wrapper for the POSIX <code class="function">stat()</code> function. The <code class="function">stat()</code> function
returns information about a file. On Windows the <code class="function">stat()</code> function in
the C library checks only the FAT-style READONLY attribute and does
not look at the ACL at all. Thus on Windows the protection bits in
the st_mode field are a fabrication of little use.
</p>
<p>
On Windows the Microsoft C libraries have several variants of the
<span class="structname">stat</span> struct and <code class="function">stat()</code> function with names
like "_stat", "_stat32", "_stat32i64" and "_stat64i32". The one
used here is for 32-bit code the one with 32-bit size and time
fields, specifically called "_stat32".
</p>
<p>
In Microsoft's compiler, by default "struct stat" means one with
64-bit time fields while in MinGW "struct stat" is the legacy one
with 32-bit fields. To hopefully clear up this messs, the gstdio.h
header defines a type GStatBuf which is the appropriate struct type
depending on the platform and/or compiler being used. On POSIX it
is just "struct stat", but note that even on POSIX platforms,
"stat" might be a macro.
</p>
<p>
See your C library manual for more details about <code class="function">stat()</code>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>filename</code></em> :</span></p></td>
<td>a pathname in the GLib file name encoding (UTF-8 on Windows)</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>buf</code></em> :</span></p></td>
<td>a pointer to a <span class="structname">stat</span> struct, which
will be filled with the file information</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>0 if the information was successfully retrieved, -1 if an error
occurred</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 2.6</p>
</div>
<hr>
<div class="refsect2">
<a name="g-lstat"></a><h3>g_lstat ()</h3>
<pre class="programlisting"><span class="returnvalue">int</span>                 g_lstat                             (<em class="parameter"><code>const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *filename</code></em>,
                                                         <em class="parameter"><code><a class="link" href="glib-File-Utilities.html#GStatBuf" title="GStatBuf"><span class="type">GStatBuf</span></a> *buf</code></em>);</pre>
<p>
A wrapper for the POSIX <code class="function">lstat()</code> function. The <code class="function">lstat()</code> function is
like <code class="function">stat()</code> except that in the case of symbolic links, it returns
information about the symbolic link itself and not the file that it
refers to. If the system does not support symbolic links <a class="link" href="glib-File-Utilities.html#g-lstat" title="g_lstat ()"><code class="function">g_lstat()</code></a>
is identical to <a class="link" href="glib-File-Utilities.html#g-stat" title="g_stat ()"><code class="function">g_stat()</code></a>.
</p>
<p>
See your C library manual for more details about <code class="function">lstat()</code>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>filename</code></em> :</span></p></td>
<td>a pathname in the GLib file name encoding (UTF-8 on Windows)</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>buf</code></em> :</span></p></td>
<td>a pointer to a <span class="structname">stat</span> struct, which
will be filled with the file information</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>0 if the information was successfully retrieved, -1 if an error
occurred</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 2.6</p>
</div>
<hr>
<div class="refsect2">
<a name="g-unlink"></a><h3>g_unlink ()</h3>
<pre class="programlisting"><span class="returnvalue">int</span>                 g_unlink                            (<em class="parameter"><code>const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *filename</code></em>);</pre>
<p>
A wrapper for the POSIX <code class="function">unlink()</code> function. The <code class="function">unlink()</code> function 
deletes a name from the filesystem. If this was the last link to the 
file and no processes have it opened, the diskspace occupied by the
file is freed.
</p>
<p>
See your C library manual for more details about <code class="function">unlink()</code>. Note
that on Windows, it is in general not possible to delete files that
are open to some process, or mapped into memory.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>filename</code></em> :</span></p></td>
<td>a pathname in the GLib file name encoding (UTF-8 on Windows)</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>0 if the name was successfully deleted, -1 if an error
occurred</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 2.6</p>
</div>
<hr>
<div class="refsect2">
<a name="g-remove"></a><h3>g_remove ()</h3>
<pre class="programlisting"><span class="returnvalue">int</span>                 g_remove                            (<em class="parameter"><code>const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *filename</code></em>);</pre>
<p>
A wrapper for the POSIX <code class="function">remove()</code> function. The <code class="function">remove()</code> function
deletes a name from the filesystem.
</p>
<p>
See your C library manual for more details about how <code class="function">remove()</code> works
on your system. On Unix, <code class="function">remove()</code> removes also directories, as it
calls <code class="function">unlink()</code> for files and <code class="function">rmdir()</code> for directories. On Windows,
although <code class="function">remove()</code> in the C library only works for files, this
function tries first <code class="function">remove()</code> and then if that fails <code class="function">rmdir()</code>, and
thus works for both files and directories. Note however, that on
Windows, it is in general not possible to remove a file that is
open to some process, or mapped into memory.
</p>
<p>
If this function fails on Windows you can't infer too much from the
errno value. <code class="function">rmdir()</code> is tried regardless of what caused <code class="function">remove()</code> to
fail. Any errno value set by <code class="function">remove()</code> will be overwritten by that
set by <code class="function">rmdir()</code>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>filename</code></em> :</span></p></td>
<td>a pathname in the GLib file name encoding (UTF-8 on Windows)</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>0 if the file was successfully removed, -1 if an error
occurred</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 2.6</p>
</div>
<hr>
<div class="refsect2">
<a name="g-rmdir"></a><h3>g_rmdir ()</h3>
<pre class="programlisting"><span class="returnvalue">int</span>                 g_rmdir                             (<em class="parameter"><code>const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *filename</code></em>);</pre>
<p>
A wrapper for the POSIX <code class="function">rmdir()</code> function. The <code class="function">rmdir()</code> function
deletes a directory from the filesystem.
</p>
<p>
See your C library manual for more details about how <code class="function">rmdir()</code> works
on your system.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>filename</code></em> :</span></p></td>
<td>a pathname in the GLib file name encoding (UTF-8 on Windows)</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>0 if the directory was successfully removed, -1 if an error
occurred</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 2.6</p>
</div>
<hr>
<div class="refsect2">
<a name="g-fopen"></a><h3>g_fopen ()</h3>
<pre class="programlisting"><span class="returnvalue">FILE</span> *              g_fopen                             (<em class="parameter"><code>const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *filename</code></em>,
                                                         <em class="parameter"><code>const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *mode</code></em>);</pre>
<p>
A wrapper for the stdio <code class="function">fopen()</code> function. The <code class="function">fopen()</code> function
opens a file and associates a new stream with it.
</p>
<p>
Because file descriptors are specific to the C library on Windows,
and a file descriptor is partof the <span class="type">FILE</span> struct, the
<span class="type">FILE</span> pointer returned by this function makes sense
only to functions in the same C library. Thus if the GLib-using
code uses a different C library than GLib does, the
<span class="type">FILE</span> pointer returned by this function cannot be
passed to C library functions like <code class="function">fprintf()</code> or <code class="function">fread()</code>.
</p>
<p>
See your C library manual for more details about <code class="function">fopen()</code>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>filename</code></em> :</span></p></td>
<td>a pathname in the GLib file name encoding (UTF-8 on Windows)</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>mode</code></em> :</span></p></td>
<td>a string describing the mode in which the file should be
opened</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>A <span class="type">FILE</span> pointer if the file was successfully
opened, or <a class="link" href="glib-Standard-Macros.html#NULL:CAPS" title="NULL"><code class="literal">NULL</code></a> if an error occurred</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 2.6</p>
</div>
<hr>
<div class="refsect2">
<a name="g-freopen"></a><h3>g_freopen ()</h3>
<pre class="programlisting"><span class="returnvalue">FILE</span> *              g_freopen                           (<em class="parameter"><code>const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *filename</code></em>,
                                                         <em class="parameter"><code>const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *mode</code></em>,
                                                         <em class="parameter"><code><span class="type">FILE</span> *stream</code></em>);</pre>
<p>
A wrapper for the POSIX <code class="function">freopen()</code> function. The <code class="function">freopen()</code> function
opens a file and associates it with an existing stream.
</p>
<p>
See your C library manual for more details about <code class="function">freopen()</code>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>filename</code></em> :</span></p></td>
<td>a pathname in the GLib file name encoding (UTF-8 on Windows)</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>mode</code></em> :</span></p></td>
<td>a string describing the mode in which the file should be
opened</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>stream</code></em> :</span></p></td>
<td>an existing stream which will be reused, or <a class="link" href="glib-Standard-Macros.html#NULL:CAPS" title="NULL"><code class="literal">NULL</code></a>. <span class="annotation">[<acronym title="NULL is ok, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>A <code class="literal">FILE</code> pointer if the file was successfully
opened, or <a class="link" href="glib-Standard-Macros.html#NULL:CAPS" title="NULL"><code class="literal">NULL</code></a> if an error occurred.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 2.6</p>
</div>
<hr>
<div class="refsect2">
<a name="g-chmod"></a><h3>g_chmod ()</h3>
<pre class="programlisting"><span class="returnvalue">int</span>                 g_chmod                             (<em class="parameter"><code>const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *filename</code></em>,
                                                         <em class="parameter"><code><span class="type">int</span> mode</code></em>);</pre>
<p>
A wrapper for the POSIX <code class="function">chmod()</code> function. The <code class="function">chmod()</code> function is
used to set the permissions of a file system object.
</p>
<p>
On Windows the file protection mechanism is not at all POSIX-like,
and the underlying <code class="function">chmod()</code> function in the C library just sets or
clears the FAT-style READONLY attribute. It does not touch any
ACL. Software that needs to manage file permissions on Windows
exactly should use the Win32 API.
</p>
<p>
See your C library manual for more details about <code class="function">chmod()</code>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>filename</code></em> :</span></p></td>
<td>a pathname in the GLib file name encoding (UTF-8 on Windows)</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>mode</code></em> :</span></p></td>
<td>as in <code class="function">chmod()</code>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>zero if the operation succeeded, -1 on error.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 2.8</p>
</div>
<hr>
<div class="refsect2">
<a name="g-access"></a><h3>g_access ()</h3>
<pre class="programlisting"><span class="returnvalue">int</span>                 g_access                            (<em class="parameter"><code>const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *filename</code></em>,
                                                         <em class="parameter"><code><span class="type">int</span> mode</code></em>);</pre>
<p>
A wrapper for the POSIX <code class="function">access()</code> function. This function is used to
test a pathname for one or several of read, write or execute
permissions, or just existence.
</p>
<p>
On Windows, the file protection mechanism is not at all POSIX-like,
and the underlying function in the C library only checks the
FAT-style READONLY attribute, and does not look at the ACL of a
file at all. This function is this in practise almost useless on
Windows. Software that needs to handle file permissions on Windows
more exactly should use the Win32 API.
</p>
<p>
See your C library manual for more details about <code class="function">access()</code>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>filename</code></em> :</span></p></td>
<td>a pathname in the GLib file name encoding (UTF-8 on Windows)</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>mode</code></em> :</span></p></td>
<td>as in <code class="function">access()</code>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>zero if the pathname refers to an existing file system
object that has all the tested permissions, or -1 otherwise or on
error.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 2.8</p>
</div>
<hr>
<div class="refsect2">
<a name="g-creat"></a><h3>g_creat ()</h3>
<pre class="programlisting"><span class="returnvalue">int</span>                 g_creat                             (<em class="parameter"><code>const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *filename</code></em>,
                                                         <em class="parameter"><code><span class="type">int</span> mode</code></em>);</pre>
<p>
A wrapper for the POSIX <code class="function">creat()</code> function. The <code class="function">creat()</code> function is
used to convert a pathname into a file descriptor, creating a file
if necessary.
</p>
<p>
On POSIX systems file descriptors are implemented by the operating
system. On Windows, it's the C library that implements <code class="function">creat()</code> and
file descriptors. The actual Windows API for opening files is
different, see MSDN documentation for <code class="function">CreateFile()</code>. The Win32 API
uses file handles, which are more randomish integers, not small
integers like file descriptors.
</p>
<p>
Because file descriptors are specific to the C library on Windows,
the file descriptor returned by this function makes sense only to
functions in the same C library. Thus if the GLib-using code uses a
different C library than GLib does, the file descriptor returned by
this function cannot be passed to C library functions like <code class="function">write()</code>
or <code class="function">read()</code>.
</p>
<p>
See your C library manual for more details about <code class="function">creat()</code>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>filename</code></em> :</span></p></td>
<td>a pathname in the GLib file name encoding (UTF-8 on Windows)</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>mode</code></em> :</span></p></td>
<td>和 <code class="function">creat()</code> 函数中的相同</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>a new file descriptor, or -1 if an error occurred. The
return value can be used exactly like the return value from <code class="function">creat()</code>.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 2.8</p>
</div>
<hr>
<div class="refsect2">
<a name="g-chdir"></a><h3>g_chdir ()</h3>
<pre class="programlisting"><span class="returnvalue">int</span>                 g_chdir                             (<em class="parameter"><code>const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *path</code></em>);</pre>
<p>
A wrapper for the POSIX <code class="function">chdir()</code> function. The function changes the
current directory of the process to <em class="parameter"><code>path</code></em>.
</p>
<p>
See your C library manual for more details about <code class="function">chdir()</code>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>path</code></em> :</span></p></td>
<td>a pathname in the GLib file name encoding (UTF-8 on Windows)</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>成功返回 0, 失败返回 -1.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 2.8</p>
</div>
<hr>
<div class="refsect2">
<a name="g-utime"></a><h3>g_utime ()</h3>
<pre class="programlisting"><span class="returnvalue">int</span>                 g_utime                             (<em class="parameter"><code>const <a class="link" href="glib-Basic-Types.html#gchar" title="gchar"><span class="type">gchar</span></a> *filename</code></em>,
                                                         <em class="parameter"><code><span class="type">struct utimbuf</span> *utb</code></em>);</pre>
<p>
A wrapper for the POSIX <code class="function">utime()</code> function. The <code class="function">utime()</code> function
sets the access and modification timestamps of a file.
</p>
<p>
See your C library manual for more details about how <code class="function">utime()</code> works
on your system.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>filename</code></em> :</span></p></td>
<td>a pathname in the GLib file name encoding (UTF-8 on Windows)</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>utb</code></em> :</span></p></td>
<td>a pointer to a struct utimbuf.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>0 if the operation was successful, -1 if an error
occurred</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 2.18</p>
</div>
</div>
</div>
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